How could a battery, a light bulb, and some lengths of metal wire be used as a conductivity tester, to test the ability of different objects to conduct electricity?

Q: How is the movement of electricity through air different from is movement through a copper wire?

A: When no current flows through a piece of copper, the free electrons are moving rapidly about. Their…

Q: Identify the statement from the following why rubber does not allow electric current. O a. It is an…

A: The conductor is the material in which electrons can flow at a particular time. Most of the metals…

Q: The resistance of a rod does NOT depend on: O its conductivity O its material O its temperature O…

A: Introduction: Resistance is a measure of the opposition to current flow in an electrical circuit.…

Q: A typical commercial airplane is struck by lightning about once per year. When this happens, the…

A:

Q: __________ seems too good to be true: electricity flowing through wires with no loss of energy to…

A: To explain : Electricity flowing through wires with no loss of energy to heating

Q: Describe experiments to demonstrate good and bad conductors of heat

A: Take a rod of that material and stick some wax balls on the rod such that they are equidistant from…

Q: Calculate the resistance of a piece of a 20- gauge copper wire 2 m long. The cross-sectional area of…

A: the solution is

Q: Chapter 30 - Supplementary Questions Quiz style questions Reading Quiz Question The human body…

A: Human body contain 70% of water and several cells which has ions like potassium and  chloride ion…

Q: creative way the effect of temperature increases on the resistance of a metallic conductor. Express…

A: Answer

Q: Why is the outer layer of a wire made from an insulator and the inner layer made of conductors?

A: Insulators are materials which do not conduct electricity or are poor conductors of electricity.…

Q: Identify the following An important class of materials whose resistivity suddenly goes to zero…

A: Consider a graph between electrical resistivity (ρ) vs temperature below.

Q: what are conductivity and resistivity of a material?

A: Conductivity and resistivity are properties of a material which tells how much charge or current it…

Q: The temperature of copper wire is raised. Its esistance remains the same Ɔ a. decreases increases Ɔ…

A: As the temperature of the copper wire is increased . The flow of electrons is interrupted due to…

Q: A resistance thermometer, is made from platinum and has a resistance of 50.0 Ω at 20.0 °C. Calculate…

A: The relation between resistance and temperature is, R=R01+αT-T0                     (I)…

Q: If the amount of current in a conductor is equal to (0.4A) calculate the amount of charge which…

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Q: Which of the following would not make for a good insulator of electricity? O A metal pipe O Wood O…

A: Required : Which of the following is not a good insulator.

Q: Compare how charge carriers move in a conductive material and explain how this relates to the Hall…

A: Hall Effect:             This effect was discovered by Edwin H. Hall in 1879.“When a current is…

Q: A thermometer made of Platinum has a resistance of 50 N at 20 C, what is the measured temperature…

A:

Q: he wire increases by A = 100 °C after a long time. If t %3D ength is used, by how many degrees will…

A: Given values:- The temperature of the wire increased,(∆θ1)=100 0C  Coefficient of…

Q: A wire is 0.86 m long and 1.1 mm2 in cross-sectional area. It carries a current of 4.0 A when a 1.6…

A:

Q: Why are the conductors of electric heating devices, such as bread-toastersand electric irons, made…

A: In most of the electric heating devices like bread toasters, and electric irons, alloy is used as…

Q: Electrical resistivity of a given metallic wire depends upon (1) its length (2) its thickness (3)…

A: The Property of the conductor which resists the flow of electric current is called resistivity.…

Q: Across a 80W PV module how many numbers of 15W lamps can be connected a.3 b.4 c.5 d.6

A: solution as

Q: Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal?

A: The electric toaster and electric irons are made up of alloy rather than pure metal because the…

Q: What best characterizes electrical conductors? O electric charges move freely O low mass density…

A: Electrical conductors are those materials that have electric charges that move freely.

Q: The resistance of a rod is INDEPENDENT of: O Its length. O Its material. Its temperature. O Its…

A: Introduction: The resistance is the property of the material which resists the flow of electric…

Q: Describe an experiment to determine coefficient of thermal conductivity of a good conductor by…

A: Experimental setup is given below.

Q: Materials that allow electricity to flow are called:  A) Insulators B) Conductors C) Electron flows…

A: The conductors are the materials which allows the flow of current through them are called…

Q: is a simple device consisting of fusible link or wire of low melting temperature

A: is a simple device consisting of fusible link or wire of low melting temperature

Q: Which of the following are conductors? (Select all that apply). -tile -carpet -rubber -metals…

A:

Q: current of 0.3A is passed through a lamp for 2 minutes using a 6-V power supply. The energy…

A: Given data: Current through the lamp, I=0.3 A Time, t=2 minutes = 2×60 s = 120 s Voltage, V=6 V

Q: * It is the measure of how easily electricity flows in a material Tolerance Resistance Conductivity…

A: Conductivity. Conductivity is the measure of the ease at which an electric charge or heat can pass…

Q: Which of the following materials best conducts electric current? A Gold b. Silver c. Copper d. Glass…

A:

Q: Over time, atoms “boil off” the hot filament in an incandescent bulb and the filament becomes…

A: The quantity that provides an obstruction to the path of current is called resistance. The…

Q: What is the heat produced in a conductor in 15.5 s if there is a current of 9.5 A and a resistance…

A:

Q: Identify the statement from the following why rubber does not allow electric current. O a. It is a…

A: Rubber does not allow the flow of electric current because : Rubber is an insulator. rubber is a…

Q: Which of the following represents the characteristic curve of a copper wire?

A: Current is defined as a charge flowing through a circuit per unit of time.

Q: A 5°C rise in temperature is observed in a conductor by passing a current. When the current is…

A:

Q: Describe in a creative way the effect of temperature increases on the resistance of a metallic…

A: as the temperature of a metallic conductor increases, the kinetic energy of the electrons of the…

Q: Which of the following will result to a dimly lit light bulb when subjected to the conductivity…

A:

Q: Why is it dangerous to use an electric shaver while taking a bath?

A: When a person bathes, the person uses the water. Water is the good conductor of heat and…

Q: How do we use conductors

A: When flammable or combustible atmospheres are present, uncontrolled discharges of static electricity…

Q: A lamp has a current of 1.95 A. In hours, how long does it take for 1 mole of electrons to pass…

A: Given Current through the lamp is i=1.95 A No of electrons is given as n=1 mole=6.022×1023   We have…

Q: What type of wire is generally used in the construction of resistors intended to be operated at high…

A: We need to answer  the type of wire is generally used in the construction of resistors intended to…

Q: Heat current by conduction is affected by all of the following, except the temperature difference…

A: